Violence prevention device

Special monitoring devices used by police agencies and criminal investigations in the future will be able to help detect or prevent a shooting.

In developed countries, some prisoners in parole or probation are required to wear an electronic surveillance device so police officers and court officials can follow their actions.

However, according to crime professor Charles Loeffler at the University of Pennsylvania, despite the use of surveillance measures, in the United States alone, these offenders are still responsible for nearly half of all gun violence incidents. in this country. Because of this, the application of more current technologies to tracking devices is needed to detect and report as soon as these people are fired.

Just last week, online magazine PLOS ONE published a report saying wearable devices are equipped with accelerometer sensors like walking distance tracking devices for joggers (exercise Sports) can also help track someone's shooting behavior.

According to the Crime Professor at the University of Pennsylvania explained to IEEE Spectrum, the act of shooting a shot is a rather special action. It is a series of continuous actions that happen in a snap. So the accelerometer sensors can easily recognize this action when a gunman squeezes the trigger.

To be able to make this statement, recruited 10 officers from the police departments and shot different types of shotguns from brands, categories to bore sizes while wearing sensor-mounted wearable devices. The above acceleration on the wrist. After testing, Charles Loeffler compared the data obtained during the test with normal activities in life and compared with those who used nail guns with a caliber 0.22 gun. in big construction projects.

Although using the same amount of gunpowder as small pistols, the nail gun is a good example of accelerating sensors that identify a shot from a specialized shotgun. Charles Loeffler further explained that in the nail gun, while using the same amount of explosive as a pistol, this amount of explosive was not used to push the nail directly out of the barrel - but to push a piston nail. The force of piston's impact on the nail created the difference in the data he collected.

Charles Loeffler's experiment showed that gun action could easily be detected by various factors. First, accelerometers can detect explosions from a gun barrel when the amount of explosive gas in the barrel is equal to the external environment. Second, the accelerometer can also detect shock when a bullet is fired from the barrel. These factors, once combined, will clearly show the sign of a shooting regardless of the size of the gun used.

Research data from the University of Pennsylvania Crime Professor also showed signs of recognizing a highly accurate shooting. Of the 357 test shots, only 3 were recorded incorrectly. Experimental results also showed that only 3 cases of false detection into a shooting among 693 normal activities. It is known that this shooting detection technique is still being further refined to distinguish the exact size of the ammunition of guns.

Once combined with electronic surveillance devices, future investigators will easily detect the exact location of a shooting or prevent a shooting from a person being monitored.

According to Charles Loeffler, he is working with Penn engineering's engineering department to apply new techniques to current electronic monitoring devices. Currently, the Professor's research team does not encounter any technical problems. But the biggest challenge is whether the police and the courts will accept the application of this new technology.

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